Notes

Acknowledgements

We would like to thank the mothers and their infants for their valuable contribution to the study. We would like to particularly thank Mr. Annai Gunasekaran for contacting and following-up the mothers.

Compliance with Ethical Statements

Conflict of Interest

None.

Informed Consent

The study was approved by the Institutional Review Board and Ethics Committee of Christian Medical College, Vellore. Written informed consent was obtained from all individual participants included in the study.